AU Base Implementation Guide
4.2.2-ballot - Ballot Australia flag

This page is part of the Australian Base IG (v4.2.2-ballot: AU Base R4.2 Ballot 5) based on FHIR (HL7® FHIR® Standard) R4. The current version which supersedes this version is 4.1.0. For a full list of available versions, see the Directory of published versions

Resource Profile: AUBaseMedicationAdministration - Detailed Descriptions

Page standards status: Trial-use Maturity Level: 2

Definitions for the au-medicationadministration resource profile.

Guidance on how to interpret the contents of this table can be found here

0. MedicationAdministration
ShortA record of medication administered to a patient in an Australian healthcare context
Standard StatusDraft (from Trial Use)
2. MedicationAdministration.medication[x]
ShortMedication Detail
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
SlicingThis element introduces a set of slices on MedicationAdministration.medication[x]. The slices areUnordered and Closed, and can be differentiated using the following discriminators:
  • type @ $this
  • 4. MedicationAdministration.medication[x]:medicationCodeableConcept
    Slice NamemedicationCodeableConcept
    ShortCoded Medication
    Control0..?
    TypeCodeableConcept
    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
    6. MedicationAdministration.medication[x]:medicationCodeableConcept.coding
    ShortMedication Codes
    SlicingThis element introduces a set of slices on MedicationAdministration.medication[x].coding. The slices areUnordered and Open, and can be differentiated using the following discriminators:
    • value @ system
    • 8. MedicationAdministration.medication[x]:medicationCodeableConcept.coding.extension
      SlicingThis element introduces a set of slices on MedicationAdministration.medication[x].coding.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
      • value @ url
      • 10. MedicationAdministration.medication[x]:medicationCodeableConcept.coding.extension:medicationClass
        Slice NamemedicationClass
        Control0..1
        TypeExtension(Medication Type) (Extension Type: Coding)
        12. MedicationAdministration.medication[x]:medicationCodeableConcept.text
        Definition

        A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

        This may be a brand or generic name as suitable for the intent of the entry.

        ShortMedication primary text
        14. MedicationAdministration.medication[x]:medicationReference
        Slice NamemedicationReference
        ShortMedication Reference
        Control0..?
        TypeReference(Medication)
        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
        16. MedicationAdministration.dosage
        18. MedicationAdministration.dosage.site
        BindingThe codes SHOULD be taken from Body Site .
        (preferred to https://healthterminologies.gov.au/fhir/ValueSet/body-site-1)
        20. MedicationAdministration.dosage.route
        BindingThe codes SHOULD be taken from Route of Administration .
        (preferred to https://healthterminologies.gov.au/fhir/ValueSet/route-of-administration-1)
        22. MedicationAdministration.dosage.method

        Guidance on how to interpret the contents of this table can be found here

        0. MedicationAdministration
        Definition

        Describes the event of a patient consuming or otherwise being administered a medication. This may be as simple as swallowing a tablet or it may be a long running infusion. Related resources tie this event to the authorizing prescription, and the specific encounter between patient and health care practitioner.

        ShortA record of medication administered to a patient in an Australian healthcare contextAdministration of medication to a patient
        Control0..*
        Is Modifierfalse
        Summaryfalse
        Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
        dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
        dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
        dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
        dom-6: A resource should have narrative for robust management (text.`div`.exists())
        2. MedicationAdministration.implicitRules
        Definition

        A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

        ShortA set of rules under which this content was created
        Comments

        Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

        Control0..1
        Typeuri
        Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        4. MedicationAdministration.modifierExtension
        Definition

        May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

        Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

        ShortExtensions that cannot be ignored
        Comments

        There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

        Control0..*
        TypeExtension
        Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
        Summaryfalse
        Requirements

        Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

        Alternate Namesextensions, user content
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
        6. MedicationAdministration.status
        Definition

        Will generally be set to show that the administration has been completed. For some long running administrations such as infusions, it is possible for an administration to be started but not completed or it may be paused while some other process is under way.

        Shortin-progress | not-done | on-hold | completed | entered-in-error | stopped | unknown
        Comments

        This element is labeled as a modifier because the status contains codes that mark the resource as not currently valid.

        Control1..1
        BindingThe codes SHALL be taken from MedicationAdministration Status Codeshttp://hl7.org/fhir/ValueSet/medication-admin-status|4.0.1
        (required to http://hl7.org/fhir/ValueSet/medication-admin-status|4.0.1)

        A set of codes indicating the current status of a MedicationAdministration.

        Typecode
        Is Modifiertrue because This element is labelled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        8. MedicationAdministration.medication[x]
        Definition

        Identifies the medication that was administered. This is either a link to a resource representing the details of the medication or a simple attribute carrying a code that identifies the medication from a known list of medications.

        ShortMedication DetailWhat was administered
        Comments

        If only a code is specified, then it needs to be a code for a specific product. If more information is required, then the use of the medication resource is recommended. For example, if you require form or lot number, then you must reference the Medication resource.

        Control1..1
        BindingFor example codes, see SNOMEDCTMedicationCodeshttp://hl7.org/fhir/ValueSet/medication-codes
        (example to http://hl7.org/fhir/ValueSet/medication-codes)

        Codes identifying substance or product that can be administered.

        TypeChoice of: CodeableConcept, Reference(Medication)
        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
        Is Modifierfalse
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        SlicingThis element introduces a set of slices on MedicationAdministration.medication[x]. The slices areUnordered and Closed, and can be differentiated using the following discriminators:
        • type @ $this
        • 10. MedicationAdministration.medication[x]:medicationCodeableConcept
          Slice NamemedicationCodeableConcept
          Definition

          Identifies the medication that was administered. This is either a link to a resource representing the details of the medication or a simple attribute carrying a code that identifies the medication from a known list of medications.

          ShortCoded MedicationWhat was administered
          Comments

          If only a code is specified, then it needs to be a code for a specific product. If more information is required, then the use of the medication resource is recommended. For example, if you require form or lot number, then you must reference the Medication resource.

          Control01..1
          BindingFor example codes, see SNOMEDCTMedicationCodeshttp://hl7.org/fhir/ValueSet/medication-codes
          (example to http://hl7.org/fhir/ValueSet/medication-codes)
          Additional BindingsPurposeDocumentation
          Australian Medication .Preferred

          This value set is for use when AMT (Australian Medicines Terminology) codes are preferred.

          PBS Item CodesPreferred

          This value set is for use when PBS (Pharmaceutical Benefits Scheme) item codes are preferred.

          MIMSPreferred

          This value set is for use when MIMS (Monthly Index of Medical Specialties) codes are preferred.

          GTINPreferred

          This value set is for use when GTIN (Global Trade Item Number) codes are preferred.

          TypeCodeableConcept, Reference(Medication)
          [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
          Is Modifierfalse
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          12. MedicationAdministration.medication[x]:medicationCodeableConcept.coding
          Definition

          A reference to a code defined by a terminology system.

          ShortMedication CodesCode defined by a terminology system
          Comments

          Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

          Control0..*
          TypeCoding
          Is Modifierfalse
          Summarytrue
          Requirements

          Allows for alternative encodings within a code system, and translations to other code systems.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          SlicingThis element introduces a set of slices on MedicationAdministration.medication[x].coding. The slices areUnordered and Open, and can be differentiated using the following discriminators:
          • value @ system
          • 14. MedicationAdministration.medication[x]:medicationCodeableConcept.coding.extension
            Definition

            An Extension


            May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

            ShortExtensionAdditional content defined by implementations
            Comments

            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

            Control0..*
            TypeExtension
            Is Modifierfalse
            Summaryfalse
            Alternate Namesextensions, user content
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            SlicingThis element introduces a set of slices on MedicationAdministration.medication[x].coding.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
            • value @ url
            • 16. MedicationAdministration.medication[x]:medicationCodeableConcept.coding.extension:medicationClass
              Slice NamemedicationClass
              Definition

              The type of information covered by the medication coding, e.g. branded product with no strength or form.

              ShortMedication type
              Control0..1
              TypeExtension(Medication Type) (Extension Type: Coding)
              Is Modifierfalse
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              18. MedicationAdministration.medication[x]:medicationCodeableConcept.text
              Definition

              A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

              This may be a brand or generic name as suitable for the intent of the entry.


              A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

              ShortMedication primary textPlain text representation of the concept
              Comments

              Very often the text is the same as a displayName of one of the codings.

              Control0..1
              Typestring
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summarytrue
              Requirements

              The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              20. MedicationAdministration.medication[x]:medicationReference
              Slice NamemedicationReference
              Definition

              Identifies the medication that was administered. This is either a link to a resource representing the details of the medication or a simple attribute carrying a code that identifies the medication from a known list of medications.

              ShortMedication ReferenceWhat was administered
              Comments

              If only a code is specified, then it needs to be a code for a specific product. If more information is required, then the use of the medication resource is recommended. For example, if you require form or lot number, then you must reference the Medication resource.

              Control01..1
              TypeReference(Medication), CodeableConcept
              [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
              Is Modifierfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              22. MedicationAdministration.subject
              Definition

              The person or animal or group receiving the medication.

              ShortWho received medication
              Control1..1
              TypeReference(Patient, Group)
              Is Modifierfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              24. MedicationAdministration.effective[x]
              Definition

              A specific date/time or interval of time during which the administration took place (or did not take place, when the 'notGiven' attribute is true). For many administrations, such as swallowing a tablet the use of dateTime is more appropriate.

              ShortStart and end time of administration
              Control1..1
              TypeChoice of: dateTime, Period
              [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

              Guidance on how to interpret the contents of this table can be found here

              0. MedicationAdministration
              Definition

              Describes the event of a patient consuming or otherwise being administered a medication. This may be as simple as swallowing a tablet or it may be a long running infusion. Related resources tie this event to the authorizing prescription, and the specific encounter between patient and health care practitioner.

              ShortA record of medication administered to a patient in an Australian healthcare context
              Control0..*
              Is Modifierfalse
              Summaryfalse
              Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
              dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
              dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
              dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
              dom-6: A resource should have narrative for robust management (text.`div`.exists())
              2. MedicationAdministration.id
              Definition

              The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.

              ShortLogical id of this artifact
              Comments

              The only time that a resource does not have an id is when it is being submitted to the server using a create operation.

              Control0..1
              Typeid
              Is Modifierfalse
              Summarytrue
              4. MedicationAdministration.meta
              Definition

              The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.

              ShortMetadata about the resource
              Control0..1
              TypeMeta
              Is Modifierfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              6. MedicationAdministration.implicitRules
              Definition

              A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

              ShortA set of rules under which this content was created
              Comments

              Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

              Control0..1
              Typeuri
              Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              8. MedicationAdministration.language
              Definition

              The base language in which the resource is written.

              ShortLanguage of the resource content
              Comments

              Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).

              Control0..1
              BindingThe codes SHOULD be taken from CommonLanguages
              (preferred to http://hl7.org/fhir/ValueSet/languages)

              A human language.

              Additional BindingsPurpose
              AllLanguagesMax Binding
              Typecode
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              10. MedicationAdministration.text
              Definition

              A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.

              ShortText summary of the resource, for human interpretation
              Comments

              Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.

              Control0..1
              TypeNarrative
              Is Modifierfalse
              Summaryfalse
              Alternate Namesnarrative, html, xhtml, display
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              12. MedicationAdministration.contained
              Definition

              These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.

              ShortContained, inline Resources
              Comments

              This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.

              Control0..*
              TypeResource
              Is Modifierfalse
              Summaryfalse
              Alternate Namesinline resources, anonymous resources, contained resources
              14. MedicationAdministration.extension
              Definition

              May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

              ShortAdditional content defined by implementations
              Comments

              There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

              Control0..*
              TypeExtension
              Is Modifierfalse
              Summaryfalse
              Alternate Namesextensions, user content
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              16. MedicationAdministration.modifierExtension
              Definition

              May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

              Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

              ShortExtensions that cannot be ignored
              Comments

              There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

              Control0..*
              TypeExtension
              Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
              Summaryfalse
              Requirements

              Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

              Alternate Namesextensions, user content
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              18. MedicationAdministration.identifier
              Definition

              Identifiers associated with this Medication Administration that are defined by business processes and/or used to refer to it when a direct URL reference to the resource itself is not appropriate. They are business identifiers assigned to this resource by the performer or other systems and remain constant as the resource is updated and propagates from server to server.

              ShortExternal identifier
              Comments

              This is a business identifier, not a resource identifier.

              NoteThis is a business identifier, not a resource identifier (see discussion)
              Control0..*
              TypeIdentifier
              Is Modifierfalse
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              20. MedicationAdministration.instantiates
              Definition

              A protocol, guideline, orderset, or other definition that was adhered to in whole or in part by this event.

              ShortInstantiates protocol or definition
              Control0..*
              Typeuri
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              22. MedicationAdministration.partOf
              Definition

              A larger event of which this particular event is a component or step.

              ShortPart of referenced event
              Control0..*
              TypeReference(MedicationAdministration, Procedure)
              Is Modifierfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              24. MedicationAdministration.status
              Definition

              Will generally be set to show that the administration has been completed. For some long running administrations such as infusions, it is possible for an administration to be started but not completed or it may be paused while some other process is under way.

              Shortin-progress | not-done | on-hold | completed | entered-in-error | stopped | unknown
              Comments

              This element is labeled as a modifier because the status contains codes that mark the resource as not currently valid.

              Control1..1
              BindingThe codes SHALL be taken from MedicationAdministration Status Codes
              (required to http://hl7.org/fhir/ValueSet/medication-admin-status|4.0.1)

              A set of codes indicating the current status of a MedicationAdministration.

              Typecode
              Is Modifiertrue because This element is labelled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              26. MedicationAdministration.statusReason
              Definition

              A code indicating why the administration was not performed.

              ShortReason administration not performed
              Control0..*
              BindingFor example codes, see SNOMEDCTReasonMedicationNotGivenCodes
              (example to http://hl7.org/fhir/ValueSet/reason-medication-not-given-codes)

              A set of codes indicating the reason why the MedicationAdministration is negated.

              TypeCodeableConcept
              Is Modifierfalse
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              28. MedicationAdministration.category
              Definition

              Indicates where the medication is expected to be consumed or administered.

              ShortType of medication usage
              Control0..1
              BindingThe codes SHOULD be taken from MedicationAdministration Category Codes
              (preferred to http://hl7.org/fhir/ValueSet/medication-admin-category)

              A coded concept describing where the medication administered is expected to occur.

              TypeCodeableConcept
              Is Modifierfalse
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              30. MedicationAdministration.medication[x]
              Definition

              Identifies the medication that was administered. This is either a link to a resource representing the details of the medication or a simple attribute carrying a code that identifies the medication from a known list of medications.

              ShortMedication Detail
              Comments

              If only a code is specified, then it needs to be a code for a specific product. If more information is required, then the use of the medication resource is recommended. For example, if you require form or lot number, then you must reference the Medication resource.

              Control1..1
              BindingFor example codes, see SNOMEDCTMedicationCodes
              (example to http://hl7.org/fhir/ValueSet/medication-codes)

              Codes identifying substance or product that can be administered.

              TypeChoice of: CodeableConcept, Reference(Medication)
              [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
              Is Modifierfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              SlicingThis element introduces a set of slices on MedicationAdministration.medication[x]. The slices areUnordered and Closed, and can be differentiated using the following discriminators:
              • type @ $this
              • 32. MedicationAdministration.medication[x]:medicationCodeableConcept
                Slice NamemedicationCodeableConcept
                Definition

                Identifies the medication that was administered. This is either a link to a resource representing the details of the medication or a simple attribute carrying a code that identifies the medication from a known list of medications.

                ShortCoded Medication
                Comments

                If only a code is specified, then it needs to be a code for a specific product. If more information is required, then the use of the medication resource is recommended. For example, if you require form or lot number, then you must reference the Medication resource.

                Control0..1
                BindingFor example codes, see SNOMEDCTMedicationCodes
                (example to http://hl7.org/fhir/ValueSet/medication-codes)
                Additional BindingsPurposeDocumentation
                Australian Medication .Preferred

                This value set is for use when AMT (Australian Medicines Terminology) codes are preferred.

                PBS Item CodesPreferred

                This value set is for use when PBS (Pharmaceutical Benefits Scheme) item codes are preferred.

                MIMSPreferred

                This value set is for use when MIMS (Monthly Index of Medical Specialties) codes are preferred.

                GTINPreferred

                This value set is for use when GTIN (Global Trade Item Number) codes are preferred.

                TypeCodeableConcept
                [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                Is Modifierfalse
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                34. MedicationAdministration.medication[x]:medicationCodeableConcept.id
                Definition

                Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                ShortUnique id for inter-element referencing
                Control0..1
                Typestring
                Is Modifierfalse
                XML FormatIn the XML format, this property is represented as an attribute.
                Summaryfalse
                36. MedicationAdministration.medication[x]:medicationCodeableConcept.extension
                Definition

                May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                ShortAdditional content defined by implementations
                Comments

                There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                Control0..*
                TypeExtension
                Is Modifierfalse
                Summaryfalse
                Alternate Namesextensions, user content
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                SlicingThis element introduces a set of slices on MedicationAdministration.medication[x].extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                • value @ url
                • 38. MedicationAdministration.medication[x]:medicationCodeableConcept.coding
                  Definition

                  A reference to a code defined by a terminology system.

                  ShortMedication Codes
                  Comments

                  Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

                  Control0..*
                  TypeCoding
                  Is Modifierfalse
                  Summarytrue
                  Requirements

                  Allows for alternative encodings within a code system, and translations to other code systems.

                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  SlicingThis element introduces a set of slices on MedicationAdministration.medication[x].coding. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                  • value @ system
                  • 40. MedicationAdministration.medication[x]:medicationCodeableConcept.coding.id
                    Definition

                    Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                    ShortUnique id for inter-element referencing
                    Control0..1
                    Typestring
                    Is Modifierfalse
                    XML FormatIn the XML format, this property is represented as an attribute.
                    Summaryfalse
                    42. MedicationAdministration.medication[x]:medicationCodeableConcept.coding.extension
                    Definition

                    An Extension

                    ShortExtension
                    Control0..*
                    TypeExtension
                    Is Modifierfalse
                    Summaryfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    SlicingThis element introduces a set of slices on MedicationAdministration.medication[x].coding.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                    • value @ url
                    • 44. MedicationAdministration.medication[x]:medicationCodeableConcept.coding.extension:medicationClass
                      Slice NamemedicationClass
                      Definition

                      The type of information covered by the medication coding, e.g. branded product with no strength or form.

                      ShortMedication type
                      Control0..1
                      TypeExtension(Medication Type) (Extension Type: Coding)
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      46. MedicationAdministration.medication[x]:medicationCodeableConcept.coding.system
                      Definition

                      The identification of the code system that defines the meaning of the symbol in the code.

                      ShortIdentity of the terminology system
                      Comments

                      The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously.

                      Control0..1
                      Typeuri
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Requirements

                      Need to be unambiguous about the source of the definition of the symbol.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      48. MedicationAdministration.medication[x]:medicationCodeableConcept.coding.version
                      Definition

                      The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged.

                      ShortVersion of the system - if relevant
                      Comments

                      Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.

                      NoteThis is a business version Id, not a resource version Id (see discussion)
                      Control0..1
                      Typestring
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      50. MedicationAdministration.medication[x]:medicationCodeableConcept.coding.code
                      Definition

                      A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).

                      ShortSymbol in syntax defined by the system
                      Control0..1
                      Typecode
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Requirements

                      Need to refer to a particular code in the system.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      52. MedicationAdministration.medication[x]:medicationCodeableConcept.coding.display
                      Definition

                      A representation of the meaning of the code in the system, following the rules of the system.

                      ShortRepresentation defined by the system
                      Control0..1
                      Typestring
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Requirements

                      Need to be able to carry a human-readable meaning of the code for readers that do not know the system.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      54. MedicationAdministration.medication[x]:medicationCodeableConcept.coding.userSelected
                      Definition

                      Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays).

                      ShortIf this coding was chosen directly by the user
                      Comments

                      Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.

                      Control0..1
                      Typeboolean
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Requirements

                      This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      56. MedicationAdministration.medication[x]:medicationCodeableConcept.text
                      Definition

                      A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

                      This may be a brand or generic name as suitable for the intent of the entry.

                      ShortMedication primary text
                      Comments

                      Very often the text is the same as a displayName of one of the codings.

                      Control0..1
                      Typestring
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Requirements

                      The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      58. MedicationAdministration.medication[x]:medicationReference
                      Slice NamemedicationReference
                      Definition

                      Identifies the medication that was administered. This is either a link to a resource representing the details of the medication or a simple attribute carrying a code that identifies the medication from a known list of medications.

                      ShortMedication Reference
                      Comments

                      If only a code is specified, then it needs to be a code for a specific product. If more information is required, then the use of the medication resource is recommended. For example, if you require form or lot number, then you must reference the Medication resource.

                      Control0..1
                      TypeReference(Medication)
                      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                      Is Modifierfalse
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      60. MedicationAdministration.subject
                      Definition

                      The person or animal or group receiving the medication.

                      ShortWho received medication
                      Control1..1
                      TypeReference(Patient, Group)
                      Is Modifierfalse
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      62. MedicationAdministration.context
                      Definition

                      The visit, admission, or other contact between patient and health care provider during which the medication administration was performed.

                      ShortEncounter or Episode of Care administered as part of
                      Control0..1
                      TypeReference(Encounter, EpisodeOfCare)
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      64. MedicationAdministration.supportingInformation
                      Definition

                      Additional information (for example, patient height and weight) that supports the administration of the medication.

                      ShortAdditional information to support administration
                      Control0..*
                      TypeReference(Resource)
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      66. MedicationAdministration.effective[x]
                      Definition

                      A specific date/time or interval of time during which the administration took place (or did not take place, when the 'notGiven' attribute is true). For many administrations, such as swallowing a tablet the use of dateTime is more appropriate.

                      ShortStart and end time of administration
                      Control1..1
                      TypeChoice of: dateTime, Period
                      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      68. MedicationAdministration.performer
                      Definition

                      Indicates who or what performed the medication administration and how they were involved.

                      ShortWho performed the medication administration and what they did
                      Control0..*
                      TypeBackboneElement
                      Is Modifierfalse
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      70. MedicationAdministration.performer.id
                      Definition

                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                      ShortUnique id for inter-element referencing
                      Control0..1
                      Typestring
                      Is Modifierfalse
                      XML FormatIn the XML format, this property is represented as an attribute.
                      Summaryfalse
                      72. MedicationAdministration.performer.extension
                      Definition

                      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                      ShortAdditional content defined by implementations
                      Comments

                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                      Control0..*
                      TypeExtension
                      Is Modifierfalse
                      Summaryfalse
                      Alternate Namesextensions, user content
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      74. MedicationAdministration.performer.modifierExtension
                      Definition

                      May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                      Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                      ShortExtensions that cannot be ignored even if unrecognized
                      Comments

                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                      Control0..*
                      TypeExtension
                      Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                      Summarytrue
                      Requirements

                      Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                      Alternate Namesextensions, user content, modifiers
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      76. MedicationAdministration.performer.function
                      Definition

                      Distinguishes the type of involvement of the performer in the medication administration.

                      ShortType of performance
                      Control0..1
                      BindingFor example codes, see MedicationAdministration Performer Function Codes
                      (example to http://hl7.org/fhir/ValueSet/med-admin-perform-function)

                      A code describing the role an individual played in administering the medication.

                      TypeCodeableConcept
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      78. MedicationAdministration.performer.actor
                      Definition

                      Indicates who or what performed the medication administration.

                      ShortWho performed the medication administration
                      Control1..1
                      TypeReference(Practitioner, PractitionerRole, Patient, RelatedPerson, Device)
                      Is Modifierfalse
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      80. MedicationAdministration.reasonCode
                      Definition

                      A code indicating why the medication was given.

                      ShortReason administration performed
                      Control0..*
                      BindingFor example codes, see ReasonMedicationGivenCodes
                      (example to http://hl7.org/fhir/ValueSet/reason-medication-given-codes)

                      A set of codes indicating the reason why the MedicationAdministration was made.

                      TypeCodeableConcept
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      82. MedicationAdministration.reasonReference
                      Definition

                      Condition or observation that supports why the medication was administered.

                      ShortCondition or observation that supports why the medication was administered
                      Comments

                      This is a reference to a condition that is the reason for the medication request. If only a code exists, use reasonCode.

                      Control0..*
                      TypeReference(Condition, Observation, DiagnosticReport)
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      84. MedicationAdministration.request
                      Definition

                      The original request, instruction or authority to perform the administration.

                      ShortRequest administration performed against
                      Comments

                      This is a reference to the MedicationRequest where the intent is either order or instance-order. It should not reference MedicationRequests where the intent is any other value.

                      Control0..1
                      TypeReference(MedicationRequest)
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      86. MedicationAdministration.device
                      Definition

                      The device used in administering the medication to the patient. For example, a particular infusion pump.

                      ShortDevice used to administer
                      Control0..*
                      TypeReference(Device)
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      88. MedicationAdministration.note
                      Definition

                      Extra information about the medication administration that is not conveyed by the other attributes.

                      ShortInformation about the administration
                      Control0..*
                      TypeAnnotation
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      90. MedicationAdministration.dosage
                      Definition

                      Describes the medication dosage information details e.g. dose, rate, site, route, etc.

                      ShortDetails of how medication was taken
                      Control0..1
                      TypeBackboneElement
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      mad-1: SHALL have at least one of dosage.dose or dosage.rate[x] (dose.exists() or rate.exists())
                      92. MedicationAdministration.dosage.id
                      Definition

                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                      ShortUnique id for inter-element referencing
                      Control0..1
                      Typestring
                      Is Modifierfalse
                      XML FormatIn the XML format, this property is represented as an attribute.
                      Summaryfalse
                      94. MedicationAdministration.dosage.extension
                      Definition

                      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                      ShortAdditional content defined by implementations
                      Comments

                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                      Control0..*
                      TypeExtension
                      Is Modifierfalse
                      Summaryfalse
                      Alternate Namesextensions, user content
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      96. MedicationAdministration.dosage.modifierExtension
                      Definition

                      May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                      Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                      ShortExtensions that cannot be ignored even if unrecognized
                      Comments

                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                      Control0..*
                      TypeExtension
                      Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                      Summarytrue
                      Requirements

                      Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                      Alternate Namesextensions, user content, modifiers
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      98. MedicationAdministration.dosage.text
                      Definition

                      Free text dosage can be used for cases where the dosage administered is too complex to code. When coded dosage is present, the free text dosage may still be present for display to humans.

                      The dosage instructions should reflect the dosage of the medication that was administered.

                      ShortFree text dosage instructions e.g. SIG
                      Control0..1
                      Typestring
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      100. MedicationAdministration.dosage.site
                      Definition

                      A coded specification of the anatomic site where the medication first entered the body. For example, "left arm".

                      ShortBody site administered to
                      Comments

                      If the use case requires attributes from the BodySite resource (e.g. to identify and track separately) then use the standard extension bodySite. May be a summary code, or a reference to a very precise definition of the location, or both.

                      Control0..1
                      BindingThe codes SHOULD be taken from Body Site .
                      (preferred to https://healthterminologies.gov.au/fhir/ValueSet/body-site-1)
                      TypeCodeableConcept
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      102. MedicationAdministration.dosage.route
                      Definition

                      A code specifying the route or physiological path of administration of a therapeutic agent into or onto the patient. For example, topical, intravenous, etc.

                      ShortPath of substance into body
                      Control0..1
                      BindingThe codes SHOULD be taken from Route of Administration .
                      (preferred to https://healthterminologies.gov.au/fhir/ValueSet/route-of-administration-1)
                      TypeCodeableConcept
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      104. MedicationAdministration.dosage.method
                      Definition

                      A coded value indicating the method by which the medication is intended to be or was introduced into or on the body. This attribute will most often NOT be populated. It is most commonly used for injections. For example, Slow Push, Deep IV.

                      ShortHow drug was administered
                      Comments

                      One of the reasons this attribute is not used often, is that the method is often pre-coordinated with the route and/or form of administration. This means the codes used in route or form may pre-coordinate the method in the route code or the form code. The implementation decision about what coding system to use for route or form code will determine how frequently the method code will be populated e.g. if route or form code pre-coordinate method code, then this attribute will not be populated often; if there is no pre-coordination then method code may be used frequently.

                      Control0..1
                      BindingThe codes SHOULD be taken from SNOMEDCTAdministrationMethodCodes
                      (preferred to http://hl7.org/fhir/ValueSet/administration-method-codes)
                      TypeCodeableConcept
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      106. MedicationAdministration.dosage.dose
                      Definition

                      The amount of the medication given at one administration event. Use this value when the administration is essentially an instantaneous event such as a swallowing a tablet or giving an injection.

                      ShortAmount of medication per dose
                      Comments

                      If the administration is not instantaneous (rate is present), this can be specified to convey the total amount administered over period of time of a single administration.

                      Control0..1
                      TypeQuantity(SimpleQuantity)
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      108. MedicationAdministration.dosage.rate[x]
                      Definition

                      Identifies the speed with which the medication was or will be introduced into the patient. Typically, the rate for an infusion e.g. 100 ml per 1 hour or 100 ml/hr. May also be expressed as a rate per unit of time, e.g. 500 ml per 2 hours. Other examples: 200 mcg/min or 200 mcg/1 minute; 1 liter/8 hours.

                      ShortDose quantity per unit of time
                      Comments

                      If the rate changes over time, and you want to capture this in MedicationAdministration, then each change should be captured as a distinct MedicationAdministration, with a specific MedicationAdministration.dosage.rate, and the date time when the rate change occurred. Typically, the MedicationAdministration.dosage.rate element is not used to convey an average rate.

                      Control0..1
                      TypeChoice of: Ratio, Quantity(SimpleQuantity)
                      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      110. MedicationAdministration.eventHistory
                      Definition

                      A summary of the events of interest that have occurred, such as when the administration was verified.

                      ShortA list of events of interest in the lifecycle
                      Comments

                      This might not include provenances for all versions of the request – only those deemed “relevant” or important. This SHALL NOT include the Provenance associated with this current version of the resource. (If that provenance is deemed to be a “relevant” change, it will need to be added as part of a later update. Until then, it can be queried directly as the Provenance that points to this version using _revinclude All Provenances should have some historical version of this Request as their subject.

                      Control0..*
                      TypeReference(Provenance)
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))